Earth Planet

Earth is the third planet from the Sun and the only astronomical object known to harbor life . According to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago. Earth's gravity interacts with other objects in space, specially the Sun and the Moon, which is Earth only natural satellite.  Earths orbits around the Sun on 365.256 solar days, a period known as an Earth sidereal year. Earth is not in surphical in shape it is in peculiar in shape. Earth rotates about its axis 366.256 times , that is a sidereal year has 366.256 sidereal days. Earth may have been a personified goddess in Germanic paganism late Norse mythology included Jord ( earth ) a giantess often given as the mother of Thor. 

Historically, earth has been written in lower case. A subject of research is the formation of the Moon some 4.53 BYA. A leading hypothesis is that it was  formed by accretion from material loosed from Earth after a Mars sized object, named Theia, hot Earth. Earth's atmosphere and oceans were formed by volcanic activity and out gassing . Water vapour from these sources condensed into the oceans, augmented by water and ice from asteroid, protoplanet, and comets. 

Earth's acid of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The gravitational interaction between Earth and the Moon cause tides, stabilizes Earth's orientation on its axis, and gradually slows its rotation . Earth is the densest planet in the Solar System and the largest and most massive of the four rocky planets. The Earth rotates once every 23 hours, 56 minutes and 4.09053 seconds. The Earth revolution periods is 365.26 days. However,more recently, in August 2020, researchers reported that sufficient water to fill the oceans may have always been on the Earth since the beginning of the planets formation.

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